docstr: Tests setting data in a buffer using a complex space.
docstr_tok: ["Tests","setting","data","in","a","buffer","using","a","complex","space","."]
code: def test_set_with_complex_space(self):
      """Tests setting data in a buffer using a complex space."""
      buffer = BufferWithInfiniteLookback(
          data=[
              get_dummy_batch_for_space(
                  space=self.space,
                  batch_size=0,
                  fill_value=float(i),
              )
              for i in range(10)
          ],
          lookback=2,
          space=self.space,
      )
      # Directly via the []-notation.
      buffer[0:2] = [self.buffer_1, self.buffer_3]
      # Lookback buffer (untouched).
      check(buffer.data[0], self.buffer_0)
      check(buffer.data[1], self.buffer_1)
      # Actual buffer has been changed by our set above.
      check(buffer.data[2], self.buffer_1)
      check(buffer.data[3], self.buffer_3)
  
file_path: ray/rllib/env/tests/test_lookback_buffer.py
imports: import unittest
  import gymnasium
  import numpy
  from ray.rllib.env.utils import BufferWithInfiniteLookback
  from ray.rllib.utils.spaces.space_utils import batch, get_dummy_batch_for_space
  from ray.rllib.utils.test_utils import check
label_desc: Use image node_id 10 for calling the TestBufferWithInfiniteLookback obj's underlying member method code with example usage: obj.test_set_with_complex_space() without return types